Services
Six engineering services, described by purpose, scope, and deliverable.
Each service can be engaged on its own or combined into a full delivery. Scope is agreed in writing before work begins, and every engagement produces artefacts you keep.
01
Custom software development
Purpose
Build applications around a business process that existing products cannot represent without distorting it.
Typical scope
Domain modelling, back-end services, business rule implementation, administrative interfaces, reporting, data migration from legacy sources, and role-based access.
Deliverables
- Source code in your repository with commit history
- Documented data model and migration scripts
- Automated unit and integration tests
- Deployment configuration for each environment
- Operating notes covering routine tasks and known constraints
02
Web application development
Purpose
Deliver browser-based products and internal tools that remain readable, responsive, and accessible across devices.
Typical scope
Interface architecture and component libraries, server-rendered or prerendered pages, authentication flows, form and validation design, state and caching strategy, performance and layout-stability work.
Deliverables
- Responsive interface verified at mobile, tablet, and desktop widths
- Reusable component library with consistent design tokens
- Accessible semantic markup and keyboard-operable interactions
- Page metadata and structured data where content is public
- Performance notes covering media handling and bundle composition
03
Cloud infrastructure and DevOps
Purpose
Make environments reproducible and releases routine, so that shipping a change is an ordinary event.
Typical scope
Infrastructure as code, container images, continuous integration and deployment pipelines, environment and secret management, backup and restore procedures, logging, metrics, and alerting.
Deliverables
- Version-controlled infrastructure definitions
- CI pipeline running linting, type checks, and tests on every change
- Automated deployment with a documented rollback path
- Monitoring dashboards and alert rules for key signals
- Runbook covering deployment, recovery, and routine operations
04
API development and systems integration
Purpose
Let separate systems exchange data reliably instead of relying on manual export, re-entry, and reconciliation.
Typical scope
REST and event-driven interface design, authentication and rate limiting, third-party integrations, field-level data mapping, scheduled and event-triggered synchronisation, and migration of existing interfaces.
Deliverables
- Documented, versioned API contracts
- Validation at the system boundary with clear error semantics
- Idempotent operations with retry and dead-letter handling
- Transfer logging and reconciliation reports
- Integration tests exercised against sandbox or mocked endpoints
05
Quality assurance and testing
Purpose
Establish evidence that a system behaves as agreed, and keep that evidence current as the system changes.
Typical scope
Test strategy, unit and integration suites, end-to-end coverage of critical journeys, regression testing, exploratory testing on realistic data, accessibility checks, and defect triage.
Deliverables
- Written test strategy tied to the agreed requirements
- Automated suites running in the CI pipeline
- Reproducible defect reports with severity and context
- Regression tests added for every fixed defect
- Release checklist covering verification before deployment
06
Software maintenance and technical support
Purpose
Keep delivered software healthy: current dependencies, observed behaviour, and a planned path for change.
Typical scope
Dependency and runtime updates, security advisory monitoring, defect handling, performance review, incremental refactoring, backlog grooming for maintenance work, and knowledge handover.
Deliverables
- Scheduled dependency and platform update cycles
- Defect log with reproduction steps and resolution history
- Periodic review of error rates and performance signals
- Refactoring proposals for areas that have become costly to change
- Handover material for client teams taking ownership
Delivery process
How an engagement runs
The same sequence applies whether the work is a single integration or a full application. Each cycle produces something that can be inspected.
- 1
Enquiry and context
You describe the problem, the systems currently in use, and the outcome expected. We ask follow-up questions in writing.
- 2
Scope definition
Requirements, constraints, and exclusions are documented, and the work is split into increments with a shared definition of done.
- 3
Architecture sketch
Data model, module boundaries, and integration points are drafted and reviewed before implementation starts.
- 4
Iterative build
Development runs in short cycles with code review and automated checks on every change.
- 5
Verification
Automated suites plus exploratory and regression testing run against realistic data before a release candidate is proposed.
- 6
Release and iteration
Deployment is automated and reversible, followed by monitoring, defect handling, and the next increment.
- 7
Handover or ongoing care
Documentation and runbooks are delivered; support or continued development continues on agreed terms.
Enquiries are handled in writing. Send a description of the project to martincolem95@gmail.com.